MACROMEDIA FLASH MEDIA SERVER 2-SERVER-SIDE ACTIONSCRIPT LANGUAGE Reference page 128

SharedObject.isDirty
Availability
Flash Media Server 2.
Usage
mySO.isDirty
Description
Property (read-only); a Boolean value indicating whether a persistent shared object has been
modified since the last time it was stored ( ) or not ( ).
true false
The method stores shared objects with an property that is
SharedObject.commit() isDirty
.
true
This property is always for non-persistent shared objects.
false
Example
The following example saves the so shared object if it has been changed:
var so = SharedObject.get("foo", true);
if (so.isDirty){
SharedObject.commit(so.name);
}
SharedObject.lock()
Availability
Flash Communication Server MX 1.0.
Usage
mySO.lock()
Parameters
None.
Returns
An integer indicating the lock count: 0 or greater indicates success; -1 indicates failure. For
proxied shared objects, always returns -1.
128 Server-Side ActionScript Language Reference